720 lines
16 KiB
C
720 lines
16 KiB
C
/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#if 0
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#ifndef lint
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#ident "@(#)rpc_cout.c 1.14 93/07/05 SMI"
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static char sccsid[] = "@(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI";
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#endif
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* rpc_cout.c, XDR routine outputter for the RPC protocol compiler
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* Copyright (C) 1987, Sun Microsystems, Inc.
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*/
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include "rpc_parse.h"
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#include "rpc_scan.h"
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#include "rpc_util.h"
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static void print_header( definition * );
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static void print_trailer( void );
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static void print_stat( int , declaration * );
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static void emit_enum( definition * );
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static void emit_program( definition * );
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static void emit_union( definition * );
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static void emit_struct( definition * );
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static void emit_typedef( definition * );
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static void emit_inline( int, declaration *, int );
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static void emit_single_in_line( int, declaration *, int, relation );
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/*
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* Emit the C-routine for the given definition
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*/
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void
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emit(definition *def)
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{
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if (def->def_kind == DEF_CONST) {
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return;
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}
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if (def->def_kind == DEF_PROGRAM) {
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emit_program(def);
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return;
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}
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if (def->def_kind == DEF_TYPEDEF) {
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/*
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* now we need to handle declarations like
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* struct typedef foo foo;
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* since we dont want this to be expanded into 2 calls to xdr_foo
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*/
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if (strcmp(def->def.ty.old_type, def->def_name) == 0)
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return;
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};
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print_header(def);
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switch (def->def_kind) {
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case DEF_UNION:
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emit_union(def);
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break;
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case DEF_ENUM:
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emit_enum(def);
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break;
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case DEF_STRUCT:
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emit_struct(def);
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break;
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case DEF_TYPEDEF:
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emit_typedef(def);
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break;
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/* DEF_CONST and DEF_PROGRAM have already been handled */
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default:
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break;
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}
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print_trailer();
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}
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static int
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findtype(definition *def, const char *type)
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{
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if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) {
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return (0);
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} else {
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return (streq(def->def_name, type));
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}
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}
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static int
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undefined(const char *type)
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{
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definition *def;
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def = (definition *) FINDVAL(defined, type, findtype);
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return (def == NULL);
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}
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static void
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print_generic_header(const char *procname, int pointerp)
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{
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f_print(fout, "\n");
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f_print(fout, "bool_t\n");
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f_print(fout, "xdr_%s(", procname);
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f_print(fout, "XDR *xdrs, ");
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f_print(fout, "%s ", procname);
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if (pointerp)
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f_print(fout, "*");
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f_print(fout, "objp)\n{\n\n");
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}
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static void
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print_header(definition *def)
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{
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print_generic_header(def->def_name,
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def->def_kind != DEF_TYPEDEF ||
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!isvectordef(def->def.ty.old_type,
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def->def.ty.rel));
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/* Now add Inline support */
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if (inline_size == 0)
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return;
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/* May cause lint to complain. but ... */
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f_print(fout, "\tregister long *buf;\n\n");
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}
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static void
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print_prog_header(proc_list *plist)
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{
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print_generic_header(plist->args.argname, 1);
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}
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static void
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print_trailer(void)
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{
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f_print(fout, "\treturn (TRUE);\n");
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f_print(fout, "}\n");
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}
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static void
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print_ifopen(int indent, const char *name)
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{
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tabify(fout, indent);
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f_print(fout, "if (!xdr_%s(xdrs", name);
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}
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static void
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print_ifarg(const char *arg)
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{
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f_print(fout, ", %s", arg);
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}
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static void
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print_ifsizeof(int indent, const char *prefix, const char *type)
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{
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if (indent) {
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f_print(fout, ",\n");
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tabify(fout, indent);
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} else {
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f_print(fout, ", ");
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}
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if (streq(type, "bool")) {
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f_print(fout, "sizeof (bool_t), (xdrproc_t) xdr_bool");
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} else {
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f_print(fout, "sizeof (");
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if (undefined(type) && prefix) {
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f_print(fout, "%s ", prefix);
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}
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f_print(fout, "%s), (xdrproc_t) xdr_%s", type, type);
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}
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}
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static void
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print_ifclose(int indent, int brace)
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{
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f_print(fout, "))\n");
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tabify(fout, indent);
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f_print(fout, "\treturn (FALSE);\n");
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if (brace)
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f_print(fout, "\t}\n");
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}
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static void
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print_ifstat(int indent, const char *prefix, const char *type, relation rel,
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const char *amax, const char *objname, const char *name)
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{
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const char *alt = NULL;
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int brace = 0;
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switch (rel) {
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case REL_POINTER:
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brace = 1;
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f_print(fout, "\t{\n");
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f_print(fout, "\t%s **pp = %s;\n", type, objname);
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print_ifopen(indent, "pointer");
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print_ifarg("(char **)");
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f_print(fout, "pp");
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print_ifsizeof(0, prefix, type);
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break;
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case REL_VECTOR:
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if (streq(type, "string")) {
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alt = "string";
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} else if (streq(type, "opaque")) {
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alt = "opaque";
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}
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if (alt) {
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print_ifopen(indent, alt);
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print_ifarg(objname);
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} else {
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print_ifopen(indent, "vector");
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print_ifarg("(char *)");
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f_print(fout, "%s", objname);
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}
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print_ifarg(amax);
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if (!alt) {
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print_ifsizeof(indent + 1, prefix, type);
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}
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break;
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case REL_ARRAY:
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if (streq(type, "string")) {
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alt = "string";
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} else if (streq(type, "opaque")) {
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alt = "bytes";
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}
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if (streq(type, "string")) {
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print_ifopen(indent, alt);
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print_ifarg(objname);
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} else {
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if (alt) {
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print_ifopen(indent, alt);
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} else {
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print_ifopen(indent, "array");
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}
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print_ifarg("(char **)");
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if (*objname == '&') {
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f_print(fout, "%s.%s_val, (u_int *) %s.%s_len",
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objname, name, objname, name);
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} else {
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f_print(fout,
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"&%s->%s_val, (u_int *) &%s->%s_len",
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objname, name, objname, name);
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}
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}
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print_ifarg(amax);
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if (!alt) {
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print_ifsizeof(indent + 1, prefix, type);
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}
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break;
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case REL_ALIAS:
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print_ifopen(indent, type);
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print_ifarg(objname);
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break;
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}
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print_ifclose(indent, brace);
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}
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/* ARGSUSED */
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static void
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emit_enum(definition *def __unused)
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{
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print_ifopen(1, "enum");
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print_ifarg("(enum_t *)objp");
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print_ifclose(1, 0);
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}
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static void
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emit_program(definition *def)
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{
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decl_list *dl;
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version_list *vlist;
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proc_list *plist;
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for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next)
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for (plist = vlist->procs; plist != NULL; plist = plist->next) {
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if (!newstyle || plist->arg_num < 2)
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continue; /* old style, or single argument */
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print_prog_header(plist);
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for (dl = plist->args.decls; dl != NULL;
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dl = dl->next)
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print_stat(1, &dl->decl);
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print_trailer();
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}
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}
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static void
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emit_union(definition *def)
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{
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declaration *dflt;
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case_list *cl;
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declaration *cs;
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char *object;
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const char *vecformat = "objp->%s_u.%s";
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const char *format = "&objp->%s_u.%s";
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print_stat(1, &def->def.un.enum_decl);
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f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name);
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for (cl = def->def.un.cases; cl != NULL; cl = cl->next) {
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f_print(fout, "\tcase %s:\n", cl->case_name);
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if (cl->contflag == 1) /* a continued case statement */
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continue;
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cs = &cl->case_decl;
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if (!streq(cs->type, "void")) {
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object = xmalloc(strlen(def->def_name) +
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strlen(format) + strlen(cs->name) + 1);
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if (isvectordef (cs->type, cs->rel)) {
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s_print(object, vecformat, def->def_name,
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cs->name);
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} else {
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s_print(object, format, def->def_name,
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cs->name);
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}
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print_ifstat(2, cs->prefix, cs->type, cs->rel,
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cs->array_max, object, cs->name);
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free(object);
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}
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f_print(fout, "\t\tbreak;\n");
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}
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dflt = def->def.un.default_decl;
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if (dflt != NULL) {
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if (!streq(dflt->type, "void")) {
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f_print(fout, "\tdefault:\n");
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object = xmalloc(strlen(def->def_name) +
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strlen(format) + strlen(dflt->name) + 1);
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if (isvectordef (dflt->type, dflt->rel)) {
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s_print(object, vecformat, def->def_name,
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dflt->name);
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} else {
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s_print(object, format, def->def_name,
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dflt->name);
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}
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print_ifstat(2, dflt->prefix, dflt->type, dflt->rel,
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dflt->array_max, object, dflt->name);
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free(object);
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f_print(fout, "\t\tbreak;\n");
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} else {
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f_print(fout, "\tdefault:\n");
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f_print(fout, "\t\tbreak;\n");
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}
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} else {
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f_print(fout, "\tdefault:\n");
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f_print(fout, "\t\treturn (FALSE);\n");
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}
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f_print(fout, "\t}\n");
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}
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static void
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inline_struct(definition *def, int flag)
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{
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decl_list *dl;
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int i, size;
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decl_list *cur, *psav;
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bas_type *ptr;
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char *sizestr;
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const char *plus;
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char ptemp[256];
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int indent = 1;
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cur = NULL;
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if (flag == PUT)
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f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n");
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else
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f_print(fout, "\t\treturn (TRUE);\n\t} else if (xdrs->x_op == XDR_DECODE) {\n");
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i = 0;
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size = 0;
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sizestr = NULL;
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for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */
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/* now walk down the list and check for basic types */
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if ((dl->decl.prefix == NULL) &&
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((ptr = find_type(dl->decl.type)) != NULL) &&
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((dl->decl.rel == REL_ALIAS) ||
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(dl->decl.rel == REL_VECTOR))){
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if (i == 0)
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cur = dl;
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i++;
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if (dl->decl.rel == REL_ALIAS)
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size += ptr->length;
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else {
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/* this code is required to handle arrays */
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if (sizestr == NULL)
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plus = "";
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else
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plus = " + ";
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if (ptr->length != 1)
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s_print(ptemp, "%s%s * %d",
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plus, dl->decl.array_max,
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ptr->length);
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else
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s_print(ptemp, "%s%s", plus,
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dl->decl.array_max);
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/* now concatenate to sizestr !!!! */
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if (sizestr == NULL) {
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sizestr = xstrdup(ptemp);
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}
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else{
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sizestr = xrealloc(sizestr,
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strlen(sizestr)
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+strlen(ptemp)+1);
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sizestr = strcat(sizestr, ptemp);
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/* build up length of array */
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}
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}
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} else {
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if (i > 0) {
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if (sizestr == NULL && size < inline_size){
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/*
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* don't expand into inline code
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* if size < inline_size
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*/
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while (cur != dl){
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print_stat(indent + 1, &cur->decl);
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cur = cur->next;
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}
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} else {
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/* were already looking at a xdr_inlineable structure */
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tabify(fout, indent + 1);
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if (sizestr == NULL)
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f_print(fout, "buf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);",
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size);
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else {
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if (size == 0)
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f_print(fout,
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"buf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);",
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sizestr);
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else
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f_print(fout,
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"buf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);",
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size, sizestr);
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}
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f_print(fout, "\n");
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tabify(fout, indent + 1);
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f_print(fout,
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"if (buf == NULL) {\n");
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psav = cur;
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while (cur != dl){
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print_stat(indent + 2, &cur->decl);
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cur = cur->next;
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}
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f_print(fout, "\n\t\t} else {\n");
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cur = psav;
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while (cur != dl){
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emit_inline(indent + 2, &cur->decl, flag);
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cur = cur->next;
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}
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tabify(fout, indent + 1);
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f_print(fout, "}\n");
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}
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}
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size = 0;
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i = 0;
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free(sizestr);
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sizestr = NULL;
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print_stat(indent + 1, &dl->decl);
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}
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}
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if (i > 0) {
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if (sizestr == NULL && size < inline_size){
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/* don't expand into inline code if size < inline_size */
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while (cur != dl){
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print_stat(indent + 1, &cur->decl);
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cur = cur->next;
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}
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} else {
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/* were already looking at a xdr_inlineable structure */
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if (sizestr == NULL)
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f_print(fout, "\t\tbuf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);",
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size);
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else
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if (size == 0)
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f_print(fout,
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"\t\tbuf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);",
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sizestr);
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else
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f_print(fout,
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"\t\tbuf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);",
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size, sizestr);
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f_print(fout, "\n\t\tif (buf == NULL) {\n");
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psav = cur;
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while (cur != NULL){
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print_stat(indent + 2, &cur->decl);
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cur = cur->next;
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}
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f_print(fout, "\t\t} else {\n");
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cur = psav;
|
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while (cur != dl){
|
|
emit_inline(indent + 2, &cur->decl, flag);
|
|
cur = cur->next;
|
|
}
|
|
f_print(fout, "\t\t}\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
emit_struct(definition *def)
|
|
{
|
|
decl_list *dl;
|
|
int j, size, flag;
|
|
bas_type *ptr;
|
|
int can_inline;
|
|
|
|
if (inline_size == 0) {
|
|
/* No xdr_inlining at all */
|
|
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
|
|
print_stat(1, &dl->decl);
|
|
return;
|
|
}
|
|
|
|
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
|
|
if (dl->decl.rel == REL_VECTOR){
|
|
f_print(fout, "\tint i;\n");
|
|
break;
|
|
}
|
|
|
|
size = 0;
|
|
can_inline = 0;
|
|
/*
|
|
* Make a first pass and see if inling is possible.
|
|
*/
|
|
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
|
|
if ((dl->decl.prefix == NULL) &&
|
|
((ptr = find_type(dl->decl.type)) != NULL) &&
|
|
((dl->decl.rel == REL_ALIAS)||
|
|
(dl->decl.rel == REL_VECTOR))){
|
|
if (dl->decl.rel == REL_ALIAS)
|
|
size += ptr->length;
|
|
else {
|
|
can_inline = 1;
|
|
break; /* can be inlined */
|
|
}
|
|
} else {
|
|
if (size >= inline_size){
|
|
can_inline = 1;
|
|
break; /* can be inlined */
|
|
}
|
|
size = 0;
|
|
}
|
|
if (size >= inline_size)
|
|
can_inline = 1;
|
|
|
|
if (can_inline == 0){ /* can not inline, drop back to old mode */
|
|
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
|
|
print_stat(1, &dl->decl);
|
|
return;
|
|
}
|
|
|
|
flag = PUT;
|
|
for (j = 0; j < 2; j++){
|
|
inline_struct(def, flag);
|
|
if (flag == PUT)
|
|
flag = GET;
|
|
}
|
|
|
|
f_print(fout, "\t\treturn (TRUE);\n\t}\n\n");
|
|
|
|
/* now take care of XDR_FREE case */
|
|
|
|
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
|
|
print_stat(1, &dl->decl);
|
|
|
|
}
|
|
|
|
static void
|
|
emit_typedef(definition *def)
|
|
{
|
|
const char *prefix = def->def.ty.old_prefix;
|
|
const char *type = def->def.ty.old_type;
|
|
const char *amax = def->def.ty.array_max;
|
|
relation rel = def->def.ty.rel;
|
|
|
|
print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name);
|
|
}
|
|
|
|
static void
|
|
print_stat(int indent, declaration *dec)
|
|
{
|
|
const char *prefix = dec->prefix;
|
|
const char *type = dec->type;
|
|
const char *amax = dec->array_max;
|
|
relation rel = dec->rel;
|
|
char name[256];
|
|
|
|
if (isvectordef(type, rel)) {
|
|
s_print(name, "objp->%s", dec->name);
|
|
} else {
|
|
s_print(name, "&objp->%s", dec->name);
|
|
}
|
|
print_ifstat(indent, prefix, type, rel, amax, name, dec->name);
|
|
}
|
|
|
|
|
|
char *upcase(const char *);
|
|
|
|
static void
|
|
emit_inline(int indent, declaration *decl, int flag)
|
|
{
|
|
switch (decl->rel) {
|
|
case REL_ALIAS :
|
|
emit_single_in_line(indent, decl, flag, REL_ALIAS);
|
|
break;
|
|
case REL_VECTOR :
|
|
tabify(fout, indent);
|
|
f_print(fout, "{\n");
|
|
tabify(fout, indent + 1);
|
|
f_print(fout, "%s *genp;\n\n", decl->type);
|
|
tabify(fout, indent + 1);
|
|
f_print(fout,
|
|
"for (i = 0, genp = objp->%s;\n", decl->name);
|
|
tabify(fout, indent + 2);
|
|
f_print(fout, "i < %s; i++) {\n", decl->array_max);
|
|
emit_single_in_line(indent + 2, decl, flag, REL_VECTOR);
|
|
tabify(fout, indent + 1);
|
|
f_print(fout, "}\n");
|
|
tabify(fout, indent);
|
|
f_print(fout, "}\n");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
emit_single_in_line(int indent, declaration *decl, int flag, relation rel)
|
|
{
|
|
char *upp_case;
|
|
|
|
tabify(fout, indent);
|
|
if (flag == PUT)
|
|
f_print(fout, "IXDR_PUT_");
|
|
else
|
|
if (rel == REL_ALIAS)
|
|
f_print(fout, "objp->%s = IXDR_GET_", decl->name);
|
|
else
|
|
f_print(fout, "*genp++ = IXDR_GET_");
|
|
|
|
upp_case = upcase(decl->type);
|
|
|
|
/* hack - XX */
|
|
if (strcmp(upp_case, "INT") == 0)
|
|
{
|
|
free(upp_case);
|
|
upp_case = strdup("LONG");
|
|
}
|
|
|
|
if (strcmp(upp_case, "U_INT") == 0)
|
|
{
|
|
free(upp_case);
|
|
upp_case = strdup("U_LONG");
|
|
}
|
|
if (flag == PUT)
|
|
if (rel == REL_ALIAS)
|
|
f_print(fout,
|
|
"%s(buf, objp->%s);\n", upp_case, decl->name);
|
|
else
|
|
f_print(fout, "%s(buf, *genp++);\n", upp_case);
|
|
|
|
else
|
|
f_print(fout, "%s(buf);\n", upp_case);
|
|
free(upp_case);
|
|
}
|
|
|
|
char *
|
|
upcase(const char *str)
|
|
{
|
|
char *ptr, *hptr;
|
|
|
|
ptr = (char *)xmalloc(strlen(str)+1);
|
|
|
|
hptr = ptr;
|
|
while (*str != '\0')
|
|
*ptr++ = toupper(*str++);
|
|
|
|
*ptr = '\0';
|
|
return (hptr);
|
|
}
|